Watch barrel



PATENTED PEB. 9, 1904.

M. BLUM.

WATCH BARREL.

APPLIOATION FILED ooT.z. 1903.

N0 MODEL.

Tra RNE ma Nonms PrJzns co, mmuwo., wAsHmmw, n.-

Patented February 9, 1904.

PATENT OFFICE.

MAURICE BLUM, OF LA CHAUX-DE-FONDS, SVITZERLAND.

WATCH-BARREL.

SPECIFICATION forming part Of Letters Patent No. 751,896, dated February 9, 1904.

Application filed October 2, 1903.

To all whom, it Wto/,y concern:

Be it known that I, MAURICE BLUM, a citizen of the Republic of Switzerland, and a resident of La Chaux-de-Fonds, Switzerland, have invented a new Watch-Barrel, of which the following is a specification.

The accompanying drawings, furnished as an example, represent a form of the present invention, Figure 1 being a plan, and Fig. 2 a section, on a larger scale, taken through oc m, Fig. l, the barrel being shown in place on a watch-movement.

This kind of barrel has been studied in order to produce a watch-movement as reduced in height as possible, while keeping the barrel of sufficient height. This result is obtained by dispensing with the barrel-bridge, its arbor A being fixed only in the main plate P of the movement. In order to render the arbor A sufciently rigid, its lower end is first perfectly fitted at e in the plate P, then fitted square in the ratchet R, and firmly held by a screw V. When this screw is tightly screwed up, the ratchet R, which is sunk in a corre- Serial No. 175,507. (No model.)

sponding recess p, formed under the plate P, rests against a circular edge r on the bottom of this recess, whereby great stability for the arbor A is insured without undue friction.

A barrel of this kind, the dimensions of which may vary, can be applied to any kind of watch.

Having now described my invention, I claim as new and wish to secure by Letters Patent- In combination with a watch, a main plate having a recess formed on its under face, a circular edge r on the bottom of said recess, a ratchet-wheel fitting in said recess and resting on said edge r a watch-barrel, and an arbor and screw securing the barrel and ratchetwheel to the main plate, substantially as described.

In witness whereof I have hereunto set my hand in presence of two witnesses.

MAURICE BLUM.

Witnesses:

ARMANI) TERRELET, JEAN JAQUET. 

